1// Copyright 2015 the V8 project authors. All rights reserved. 2// Use of this source code is governed by a BSD-style license that can be 3// found in the LICENSE file. 4 5// Flags: --harmony-sharedarraybuffer 6 7function Module(stdlib, foreign, heap, offset) { 8 "use asm"; 9 var MEM8 = new stdlib.Int8Array(heap, offset); 10 var MEM16 = new stdlib.Int16Array(heap, offset); 11 var MEM32 = new stdlib.Int32Array(heap, offset); 12 var MEMU8 = new stdlib.Uint8Array(heap, offset); 13 var MEMU16 = new stdlib.Uint16Array(heap, offset); 14 var MEMU32 = new stdlib.Uint32Array(heap, offset); 15 var xor = stdlib.Atomics.xor; 16 var fround = stdlib.Math.fround; 17 18 function xori8(i, x) { 19 i = i | 0; 20 x = x | 0; 21 return xor(MEM8, i, x)|0; 22 } 23 24 function xori16(i, x) { 25 i = i | 0; 26 x = x | 0; 27 return xor(MEM16, i, x)|0; 28 } 29 30 function xori32(i, x) { 31 i = i | 0; 32 x = x | 0; 33 return xor(MEM32, i, x)|0; 34 } 35 36 function xoru8(i, x) { 37 i = i | 0; 38 x = x >>> 0; 39 return xor(MEMU8, i, x)>>>0; 40 } 41 42 function xoru16(i, x) { 43 i = i | 0; 44 x = x >>> 0; 45 return xor(MEMU16, i, x)>>>0; 46 } 47 48 function xoru32(i, x) { 49 i = i | 0; 50 x = x >>> 0; 51 return xor(MEMU32, i, x)>>>0; 52 } 53 54 return { 55 xori8: xori8, 56 xori16: xori16, 57 xori32: xori32, 58 xoru8: xoru8, 59 xoru16: xoru16, 60 xoru32: xoru32, 61 }; 62} 63 64function clearArray() { 65 var ui8 = new Uint8Array(sab); 66 for (var i = 0; i < sab.byteLength; ++i) { 67 ui8[i] = 0; 68 } 69} 70 71function testElementType(taConstr, f, offset) { 72 clearArray(); 73 74 var ta = new taConstr(sab, offset); 75 var name = Object.prototype.toString.call(ta); 76 assertEquals(0, f(0, 0xf), name); 77 assertEquals(0xf, ta[0]); 78 assertEquals(0xf, f(0, 0x11), name); 79 assertEquals(0x1e, ta[0]); 80 // out of bounds 81 assertEquals(0, f(-1, 0), name); 82 assertEquals(0, f(ta.length, 0), name); 83} 84 85function testElement(m, offset) { 86 testElementType(Int8Array, m.xori8, offset); 87 testElementType(Int16Array, m.xori16, offset); 88 testElementType(Int32Array, m.xori32, offset); 89 testElementType(Uint8Array, m.xoru8, offset); 90 testElementType(Uint16Array, m.xoru16, offset); 91 testElementType(Uint32Array, m.xoru32, offset); 92} 93 94var offset = 0; 95var sab = new SharedArrayBuffer(16); 96var m1 = Module(this, {}, sab, offset); 97testElement(m1, offset); 98 99offset = 32; 100sab = new SharedArrayBuffer(64); 101var m2 = Module(this, {}, sab, offset); 102testElement(m2, offset); 103